Samuel piskb



(No Model.) 2 Sheets-Sheet 1..

s. FISKE.

CANE SHREDDER.

No. 390,580. Patented Oct. 2, 1888.

WITNESSES a 58 'QW'MJ WWW AME A TTORNEY Written STATES hrice.

SAMUEL FISKE, OF NEW YORK, N. Y.

CANE- -SHREDDER.

SPECIFICATION forming part of Letters Patent No. 390,580, dated October2, 1888.

Application filed May 2, 1887. Serial No. 236,807. (No model.)

To all whom it may concern.-

Be it known that I, SAMUEL FIsKn, of New York, county of New York, andState of New York, have invented certain new and useful Improvements inOane-Shredders,of which the following is a full, clear, and exactdescription, reference being bad to the accompanying drawings, and tothe letters of reference marked thereon.

This invention is designed as an improvement on the apparatus fortreating sugar-cane, patented in the United States June 30, 1885,

No. 321,006, and its object is to simplify and improve the constructionof the cane-shredder and to render it more efficient in action.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is aside elevation showing the caneshredder, a set of rolls,cane-carrier, and conducting-chutes in their proper relative positionsfor operating on sugar-cane, the shredder and chutes having parts brokenaway or removed to exhibit other parts. Fig. 2 is an enlarged endelevation of an end housing of the shredder. Fig. 3 is a plan of asection of shredder back plate, showing doortherein. Fig. 4 is a plan ofa cap of ajournal-box for shafts of shredder-rolls.

The rolls are set parallel with each other and so that their rings ordisks interlock, as indicated, and when in operation they revolve atdifferent speeds and in opposite directions, so that the teeth make apeculiar shearing out, which prevents them from becoming clogged andcauses them not only to cut, but to tear apart into fine fibers orshreds the cane or other fibrous material operated upon, so as to exposethe juice-containing cells more completely to the subsequent action ofthe juice extractor.

My especial improvements will be hereinafter set forth.

In some cases the shredder shafts or drums have been journaled on ahorizontal bed-plate and in the same horizontal plane, and in otherinstances in like boxes set at an angle of about forty-five degrees; butin neither method of construction are the boxes sufficiently rigid toproperly withstand the strain when the shredder becomes accidentallycrowded with cane.

To remedy this defect, I construct the hous ings O, as shown, muchbroader than the diameter of a shredderrolhwith broad bases, by whichthey may be most rigidly secured to the supporting-timbers D, as shownin Fig. 1. A strong back plate, C, secured by bolts a to the flangedupper edges ofthe housings, adds rigid ity to them. In this back plate,0, is a door, E, which may be opened at will to enable the operator toinspect and adjust the disks or remove any material with which the rollsmay have become clogged.

As best shown in Fig. 2, it will be seen that the housings have centrallongitudinal grooves or guides, (1, formed at angles of about fortyfivedegrees to the housing-base, and the sides of these grooves are formedby strong guidingribs (2, and in the lower ends of these grooves arefashioned the bearingsf for the lower rollshaft. The capsf of theselowerjournal boxes or bearings have slotted ends, as shown in Fig. I,that they may engage on the ribs d and be easily raised out of the wayor entirely removed whenever it may be desired.

Both halves of the bearing or boxes 9 of the upper roll or shaft alsohave slotted ends, like the cap f, and for the same reasons, so it willbe seen that all obstructions can be removed from the grooves d, to theend that both rolls may readily be removed from the shredder forrepairs, &c., without displacing anything but the said bearings and asection, h, of the shrouding h, which covers the tops of said groovesand extends from one housing to the other to hold them more firmly inplace.

Two check-pieces, it, support a cheek-block, 1;, up through which ispassed a screw, is, whose point engages against a boss, Z, on the underside of the lower half of the journal-box Z, so that by turning the saidscrew Win one or the other direction, as the case may be, the saidbearing Z, and consequently the upper roll supported therein, may be adjustcd nearer to or farther from the lower shredderroll, in. order toshred cane finer or coarser, as may be desired.

A screw,m, passed down through the shrouding 71, over each housing,bears on a cap, a, fixed on the top of a strong spiral spring, or, whoselower end is engaged in a recessed boss, Z on the top ,of the cap of thejournal-box Z. By this screw the tension of the spring a may IOO beregulated or adjusted, and it is designed to so adjust it that it willyield when desirable sufliciently for the upper shredder-roll to lift inorder to relieve the shredder, so that pieces of iron or .other foreignsubstances accidentally entering wilh the cane may pass through withoutinjury to the machine.

These improvements greatly simplify the construction of the shredder,strengthen the weaker parts, diminish the chances of injury to it,remove all difficulties in its operation,

'and facilitate inspection and repairs, and consequently add much to thecommercial value of the machine.

In the drawings, F, Fig. 1, represents an ordinary set ofjuiceexpressingrolls; G, a chute for conducting shredded cane from shredder to rolls,and H a chute conducting cane from cane-carrier I to shredder; and K isa frame supporting shredder, cane'carrier, 850.

I am aware of the United States Patents Nos. 59,514, 291,425, and316,768, and do not claim the constructions therein shown; but,

Having thus described my invention, I desire to secure by LettersPatent- In a caneshredder, the combination, with the supporting-frameand the shredder-rolls, of housings constructed and arrangedsubstantially as herein shown and described, With broad horizontalbases, central longitudinal grooves or guides,d, formed at angles ofabout forty-five degrees to said bases, guiding-ribs d, fixed lowershaft-bearings, f,slotted ended lower journal-box caps, f, slotted endedupperjournal boxes, g. shrouding h, removable shrouding-sections h,check-pieces and blocks 70 70, respectively, adjustingscrews 70 m,springcaps n, and spiral tensionsprin gs n, all adapted to be operatedas set forth.

In testimony that I claim the foregoing I have hereunto set my hand, inthe presence of two witnesses, this 15th dayof April, 1887.

SAMUEL FISKE.

Witnesses:

JAooB J. SToRER, A. D. BROWN.

